Proverbs 20:5 in the World English Bible
Counsel in the heart of man is like deep water, but a man of understanding will draw it out.
Context
4 The sluggard will not plow by reason of the cold; therefore shall he beg in harvest, and have nothing.
5 Counsel in the heart of man is like deep water; but a man of understanding will draw it out.
6 Most men will proclaim every one his own goodness: but a faithful man who can find?